rev. page 1 of 3 date 08/08/2007 DESCRIPTION: incremental encoder PART NUMBER: MEH12 ELECTRICAL SPECIFICATIONS output waveform output signals current consumption frequency response output phase difference Square Wave A, B, Z phase ≤40 mA 0~100 KHz A, B phase difference 90° ± 45° (T/4±T/8) Z phase T±T/2 (see output waveform) 5 V dc ± 10% 100, 200, 256, 300, 360, 500, 600, 900, 1000, 1500, 1800, 2000, 2048 2µ or less (output cable 1m or less) supply voltage output resolution (ppr) waveform rise/fall time MECHANICAL SPECIFICATIONS max shaft load, radial: axial: starting torque max rotational speed shock resistance vibration proof weight cable 1.9N (200gf) 0.98N (100gf) (1500-2048 ppr) 1.9N (200gf) 0.98N (100gf) (1500-2048 ppr) 1 x 10-3 NM (10 gf·cm max.) 6000 RPM 500 m/s2 (50G), 3 times each on XYZ 55 Hz, double amplitude 1.5mm, 2 hours each on XYZ 40 g (with 1m cable) 3mm outside diameter 5-core vinyl wire, insulated shield cable (length 1m) ENVIRONMENTAL SPECIFICATIONS operating temp storage temp humidity -10° to +70° C -20° to +80° C RH 35%~90% non collecting ORDERING INSTRUCTIONS MEH12 - XXXXPX Resolution (PPR): 1000 = 1000 PPR 1500 = 1500 PPR 1800 = 1800 PPR 2000 = 2000 PPR 2048 = 2048 PPR Output Circuit: " " = Voltage output C = Open collector output E = Line Driver Output 20050 SW 112th Ave. Tualatin, Oregon 97062 phone 503.612.2300 fax 503.612.2383 rev. DESCRIPTION: incremental encoder PART NUMBER: MEH12 CIRCUIT CONNECTIONS Open Collector Output (C) Voltage Output +5V Red +5V Red A/B/Z White Green Yellow A/B/Z White Green Yellow 0V Black 30mA max 20mA max 0V Black CABLE SHIELD CABLE SHIELD Line Drive Output (E) +5V Red A/B/Z White Green Yellow A/B/Z 26C31 White/Black Green/Black Yellow/Black 0V Black CABLE SHIELD OUTPUT WAVEFORM Clockwise rotation viewed from front Counter Clockwise rot ation viewed from front T T Phase A H L Phase A H L Phase B H L Phase B H L Phase Z H L Phase Z H L T ± T (90˚± 45˚) 8 8 T±T/2 T ± T (90˚± 45˚) 8 8 T±T/2 The position of Z phase against A, B phase is not specified 20050 SW 112th Ave. Tualatin, Oregon 97062 phone 503.612.2300 fax 503.612.2383 page 2 of 3 date 08/08/2007 REV. A DESCRIPTION NEW DRAWING DATE 7/27/2007 8.0 0.315 35° Output cable 1 meter A 19.0 0.748 2.0 0.079 7.0 0.276 20.0 0.787 2.5 0.098 2-M2 90 arrangement 10.0 0.394 25.0 0.984 RoHS TOLERANCE: ±0.3mm UNLESS OTHERWISE SPECIFIED 3.0 0.118 5.5 0.217 20050 SW 112th Ave. Tualatin, OR 97062 Phone: 503-612-2300 800-275-4899 Fax: 503-612-2383 Website: www.cui.com 4.0 0.157 2-M2 depth 3 TITLE: Hole PC FILE NAME: MEH12 COPYRIGHT 2007 BY CUI INC. Cable Color Output Type Red White Green Yellow Power A-Phase B-Phase Z-Phase Black 0V A 1.5 2.0 3.0 - - - REV: Incremental Encoder PART NO. MEH12 DRAWN BY: JMS A UNITS: MM [INCHES] APPROVED BY: SCALE: 2:1